685451304 has 48 divisors (see below), whose sum is σ = 1899612000. Its totient is φ = 223169184.

The previous prime is 685451303. The next prime is 685451311. The reversal of 685451304 is 403154586.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (685451303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107604 + ... + 113795.

It is an arithmetic number, because the mean of its divisors is an integer number (39575250).

Almost surely, 2^685451304 is an apocalyptic number.

It is an amenable number.

685451304 is an abundant number, since it is smaller than the sum of its proper divisors (1214160696).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

685451304 is a wasteful number, since it uses less digits than its factorization.

685451304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221454 (or 221447 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

The square root of 685451304 is about 26181.1249567317. The cubic root of 685451304 is about 881.7095315122.

The spelling of 685451304 in words is "six hundred eighty-five million, four hundred fifty-one thousand, three hundred four".